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限制性的定语从句
限制性定语从句：
限制性定语从句对先行词起限制、修饰的作用，关系代词有that,which,whom,who,whose以及关系副词when,where等，没有明显的逗号把从句与主语分开，表达的意思为被修饰词的一个定语。
例句：
Do you know the professor who is speaking at the meeting?
Where is the book which I bought this morning?
非限制性定语从句：
作用相当于一种插入语或者对先行词的一种解释，和先行词之间只有比较松散的关系，文字中常常用逗号将其与主句分开，用法其实与限制性定语从句极为相似，只是不能用that做修饰词。
例句：
This letter is from his parents, who are working in Tibet.
Englishi is an important subject, which every students should study well.
The building, in front of which sat a boy, was a school.
一、
定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如：
This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性）
The house, which we bought last month, is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性）
2) 当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的，例如：
Charles Smith, who was my former teacher, retired last year. 查理·史密斯去年退休了，他曾经是我的老师。
My house, which I bought last year, has got a lovely garden. 我去年买的的那幢房子带着个漂亮的花园。
This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。
3) 非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数，例如：
He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。
Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。
二、
从形式上看，限制性定语从句与其先行词紧紧相连，两者没有停顿；非限制性定语从句与先行词之间有逗号隔开。从意义上讲，限制性定语从句用来修饰先行词，两者密不可分；而非限制性定语从句仅仅对先行词作补充性叙述或说明，两者关系不那么紧密。由于两种定语从句存在着这些区别，一般来说，限制性定语从句多半译成汉语的前置定语，修饰其后的先行词，非限制性定语从句则往往译成后置的并列从句。that不能引导非限制性定语从句。通常对定语从句处理如下：
（1） 限制性定语从句译成前置定语
These neighborhoods frequently recreate much of the culture and the values of the nationality that makes up the majority of the population.
这些居民区经常再现构成大多数居民的大量民族文化和价值观念。
（2） 非限制性定语从句译成后置的并列分句
In almost all developing countries, economic development depends upon growth in export trade, which in turn creates jobs and raises living standards.
几乎所有的发展中国家经济的发展都依赖于出口贸易的增长，而出口的'增长又有助于创造更多的就业机会和提高人民的生活水平。
但是，有时候因为意思上的关系，或者出于汉语句子结构上的考虑，要把限制性定语从句译成后置的并列分句，而把非限制性定语从句译成前置定语。
（3） 限制性定语从句译成后置的并列从句
Each team plays ten or eleven games each season which begins in September and ends in November.
每个队每赛季参加十到十一场比赛，每个赛季九月份开始，十一月份结束。
（4） 非限制性定语从句译成前置定语
He appeared to be returning home from a walk, for his buckle shoes, which followed a fashion long since out of date, were covered with dust.
他好象是散步之后回家去，因为他那早已过时的扣鞋上布满了灰尘。
（5） 有的定语从句，从意义上看实际相当于一个状语从句，表示原因，目的，结果，让步等关系。这样的定语从句应译出汉语的偏正复句，但是要加上相应的连接词以表明其与主句的关系。
Norway is, quite naturally, paying great attention to developments in Europe and in the Atlantic community, which are so instrumental to the maintenance of peace and security in our part of the world.
挪威自然十分关切欧洲和大西洋国家的发展，因为这些发展大大有助于维护世界上我们这一地区的和平和安全
说明：关系代词that和关系副词why不能引导非限制性定语从句。
三、下面是些例题，你做做看。
一、that不能用来引导非限制性定语从句。如：
【考例一】She heard the terrible noise, ________brought her heart into her mouth.
A. it B. which C. this D. that
【解析】选B。后半句为非限制性定语从句，尽管先行词noise属于事物，也不能用that而要用which来引导。which指代noise，在从句中作主语。
二、除which外，还可用when，where，whose，whom等引导非限制性定语从句，且各自的用法及差异与它们用在限制性定语从句时相同。如：
Next month, when youll spend your summer holidays in your hometown, is approaching. 下个月即将来临，届时你们将在家乡度暑假。(关系副词when指代表示时间的名词next month，并作从句的状语。)
She is going to live in Macao, where she has some close friends. 她要到澳门去居住，在那里她有几个密友。 (关系副词where指代表示地点的名词Macao，并在从句中作状语。)
【考例二】Recently I bought an ancient Chinese vase, ________was very reasonable.
A. which price
B. the price of which
C. its price
D. the price of whose
【解析】选B。whose在从句中作表示所属关系的定语，既可指代人，也可指代物。指物时，常可转换为of which；指人时常可转换为of whom。
【考例三】 In the office I never seem to have time until after 5:30 pm,______many people have gone home.
A. whose time B. that
C. on which D. by which time
【解析】 先行词5:30 pm与time之间是一种同位关系，可用which来作定语替代。从句中的完成状态，常与by短语连用。故选D。
三、在非限制性定语从句中作宾语的关系代词不能省略。如：
He was eager to go to the hospital to see his stepmother, whom he loved as his own mother. 他迫切地想到医院去看望他的继母，他把继母当自己的亲妈妈一样爱戴。
四、非限制性定语从句的关系代词which，既可以指代前面的先行词，也可以指代前面整句的含义。如：
【考例四】 Dorothy was always speaking highly of her role in the play, of course,________made the others unhappy.
A. who B. which
C. this D. what
【解析】选B。指代“Dorothy总是高度评价自己在那场戏中所担任的角色”的整个事件。
【考例五】Carol said the work would be done by October,________personally I doubt very much.
A. it B. that
C. when D. which
【解析】表示时间的名词October，用“我个人非常怀疑”来修饰，意思不通。应该修饰整个主句， 表示对“Carol说在十月前能做好这项工作”怀疑。故选D。
五、引导非限制性定语从句时as和which的差异：从句置于句首时，非限制性定语从句只能用as引导，而置于句末时，两者都可以使用。 如：
【考例六】________is known to everybody, the moon travels round the earth once every month.
A. It B. As C. That D. What
【解析】逗号表明为非限制性定语从句。选B。
【考例七】________is mentioned above, the number of the students in senior high schools is increasing.
A. Which B. As
C. That D. It
【解析】答案为B。与考例六同理。
定语从句的几种类型
定语从句的类型
(一) 由 who，whom，whose引导的定语从句
e.g.The student who answered the question was Jack
(二) 由which引导的定语从句
1) which在从句中作主语或谓语动词的宾语。
e.g.：I found a door which was unlocked.
Where is the book I bought yesterday?
2) which(whom)在从句中作介词的宾语时，介词一般可放在which(whom)之前，也可放在从句原来的位置上，在含有介词的动词固定词组中介词只能放在原来的位置上，而不能放在which(whom)之前。
e.g.：Please tell me from whom you borrowed the English novel. (=Please tell me whom you borrowed the English novel from.)This is the magazine which you are looking for. (look for是固定词组)
(三) 由that引导的定语从句在这种定语从句中that可以指人或物，代替who，whom，which，在从句中作主语或谓语动词的宾语(不能放在介词后面作介词宾语)。
e.g.：Would you like to have lunch at a new restaurant I heard about? (that可省略)但下列两种情况只能用that
1) 序数词或最高级形容词修饰先行词时，要用that. e.g.：The first English novel that I read was A Tale of Two Cities by Charles Dickens.
2) all, everything, nothing, something, anything等不定代词作先行词时，要用that。e.g.：Everything that we saw at the Industrial Exhibition greatly interested us.
(四) 由when, where, why引导的定语从句
I will never forget the day when I arrived in London.
. (五) 限制性定语从句和非限制性定语从句限制性定语从句是句中不可缺少的组成部分，如果没有从句，先行词的意思就不明确，主句也不完整，从句和主句之间一般不用逗号分开。
非限制性定语从句是主句先行词的补充说明，没有从句并不影响主句意思的明确或完整，这种定语从句一般用逗号与主句分开。在非限制性定语从句中通常不用关系代词that。
e.g：He once bought a railway ticket for a woman, which was reported in the newspapers.(which代表主句所述事实)
定语从句教案
教学目标
1. 知识目标：掌握下列重点单词和词组的.意思及用法ache, evercise, weight, give up, interest及其词汇转化
2. 能力目标：能够询问有关健康的信息，表达态度，提供建议。学习使用由whose引导的定语从句。
3.情感目标：通过了解tony 的经历，培养体谅、关爱他人的情感态度。
教学重难点
1.重点：对话中的句型应用，由whose引导的定语从句
2.难点：由whose引导的定语从句的运用。
教学工具
课件
教学过程
[课前朗读]: 朗读生词ache, exercise, weight, give up, interest, tasty----taste, menu, persuade.根据音标读出单词并了解汉语意思，养成学生自主学习词汇的习惯，促使学生迅速进入学习状态。
[检查词汇预习]：
a.采取学生结对、小组互查等形式来检查学生对词汇的预习情况。
b.朗读单词,注意发音。
一、情境导入
教师可问学生：(1)What’s your favourite sport?(2) How do you think we can keep fit?(3) Have you ever remembered what happened to Tony in Module9?这样会调动学生用英语思维的积极性, 引出本单元话题。
二、小听力(自主完成，合作释疑)
听Activity 2,完成表格
Betty
Lingling
Taijiquan
Weight
training
Running
针对表格进行说的练习。如：How does Lingling think of Taijiquan and running?
三、大听力 多层听
1.听Activity 3，完成下列各题。
1).Who has Betty bumped into?
A. The head teacher B. The English teacher C.Lingling and Betty
2).Does Daming think that the boy in his team can go to a sports school ?
A. Yes, he does B. No， he doesn’t C. We don’t know
3).What does Daming want the head teacher to write ?
A. Something about staying healthy
B. Something about training for the Olympics
C. something about buying a camera
2. 再听Activity 3，完成下列表格。
1. How did Tony feel
the basketball training? 1. He feels very
2. What will the boy in Daming’s team need to do? 2. He needs to do a lot of___ _____
3. Why isn’t allowed to use his father’s camera any more? 3. Because he almost __ ______ it last time.
四、默读对话，自主完成Activity 4.
完成后小组展示并纠正。小组间合作解决activity 3中不懂的地方，教师适时点拨。
五、突破重点与难点
对重点内容和疑难问题进行合作探究学习。
1.My legs ache a bit. ___________________(翻译)
(1) a bit 译为_____________. 其同义短语是___________.
自主造句:_______________________________.
2. Don’t give up if you want to stay fit.__________________________.
give up, 放弃。其中up是代词，后跟名词作宾语时可放在短语 ，也可放在 ，而跟代词宾语时只能放 。例如：give it/them up放弃做某事----give up doing sth.
自主造句： _______________________.
我们学过的可加动名词的动词或短语有
3.He is not fit or strong enough.____________________________
总结enough 的用法并举例
自主造句:
4. I’ve got a friend whose brother is training for the Olympics.此句含有一个whose 引导的定语从句，whose在从句中作定语，又如：
He is the only student in our class whose father is a policeman.
There is a boy whose parents want him to go to a sports school.
先行词为无生命的物体时也可以用whose 引导定语从句.如：
The book whose cover is green is mine.
No one now lives in the room whose windows are broken.
5.找出含有whose 的定语从句并翻译句子。分析定语从句的先行词。
___________________________________________________.
___________________________________________________.
___________________________________________________.
___________________________________________________.
5. 自主补充完善
六、归纳短语
通过对对话的学习，让学生归纳本课的短语，可以小组合作，然后通过展示呈现出一个小组的成果，然后其他小组补充完善。
1. _____________________ 9._______________________
2. _____________________ 10.______________________
3. _____________________ ______________________
4. _____________________ _______________________
5. _____________________ ______________________
6. _____________________ ______________________
7. _____________________ ______________________
8. _____________________ ______________________
七、诵读积累
(一)跟录音机朗读对话，模仿语音语调。
(二)读熟对话
(三)读烂短语
(四)读烂下列重点句子
1.Don’t give up if you want to stay fit.
2. He isn’t fit or strong enough.
3.I’m not allowed to use it any more.
4.It’s my father who gives me my pocket money.
5. Don’t talk to me about that.
6. What’s up?
7.Guess what?
8. (含有whose的定语从句)
八、说的训练：
Work in pairs. Ask and answer the questions in Activity 5.
九、当堂检测
(一)翻译下列短语及句子：
1.放弃___________________2.一点_____________________________
3.保持健康 _______________ 4.足够强壮_________________
5.碰巧遇到_________________6.发生什么事了?_________________
7.看起来像 ________________ 8.祝你好运 ________________
什么叫限定性定语从句和非限定性定语从句
限制性的定语从句和非限制性的定语从句。一个是没有逗号，一个是有逗号。
限制性的定语从句。不能省，省了原句就可能会语义不名。
非限制性的定语从句只起的补充说明的作用，可以省掉。
限定性定语从句用法
限定性定语从句用法1
在引导限定性定语从句时，that有时相当于in which,at which,for which或on which
（1）Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed. 人们对白日做梦的态度正在改变，这与人们对夜间做梦的看法的变化有非常相似之处。
（2）I like the music for the very reason that(for which) he dislike it. 我出于某种原因喜欢这种音乐，而他恰恰与我相反。
（3）We arrived the day that(on which) they left. 刚好我们到的那天他们走了。
在限定性定语从句中，当关系代词在从句中担任动词宾语时，关系代词可省略。
（1）The book (that/ which) I am reading is very interesting. 我在读的书很有趣。
（2）Is there anything (that) you wanted? 想要什么东西吗?
限制性定语从句与非限制性定语从句用法区别：
一、 句法的功能、表现形式不同
定语从句分为限制性和非限制性两种。限制性定语从句不可缺少先行词，去掉它主句意思往往就不明确了，它与主句之间通常不用逗号分开；非限制性定语从句是对先行词的附加说明，去掉它也不会影响主句的意思。如：
Do you know the professor who is speaking at the meeting? （限制性定语从句）
English is an important subject, which every student should study well. （非限制性定语从句）
二、 先行词不尽相同
限制性定语从句的先行词往往是某一个词，但非限制性定语从句的先行词可以是一个词，也可以是句子的一部分，甚至是整个主句，此时非限制性定语从句一般由which或as引导，as引导非限制性定语从句常用在as is said / known / expected / mentioned / reported / announced等结构中。如：
He has passed the college entrance examination, which makes his parents quite happy.
As is known to everybody, the moon travels round the earth once every month.
三、 关系词的使用情况有所不同
1． that 不可引导非限制性定语从句。如：
Her father gave her a computer for her birthday，which pleased her a lot.
2． why 不用在非限制性定语从句中，需用for which代替。如：
I told them the reason, for which I didn't attend the party last week.
3． 关系代词替代情况不同
关系代词 whom 在限制性定语从句中作宾语时可用 who 代替 whom, 但 whom 在非限制性定语从句中作宾语时不可用 who代替。如：
This is the girl whom (who) I have been in love with for six years.
The young man had a new girl friend, whom he wanted to show all his love for.
4． 关系代词省略情况不同
关系代词在限制性定语从句中作宾语时可以省略；非限制性定语从句的所有关系代词均不可省略。如：
She is the new student (whom / who / that) I want to introduce to you.
All the books there, which have beautiful pictures in them, were written by him.
四、 下列情形用非限制性定语从句
1. 当“不定数量词 (如some, several) ／ 数词 ＋ of which ／ whom”表示“整体 (which ／ whom)中的一部分”的概念时。如：
We saw many animals in the zoo, some of which are tigers．
There are fifteen new players in our team, two of whom come from Canada.
2. 当先行词为专有名词或被物主代词和指示代词修饰时，其后的定语从句通常是非限制性的。如：
My house, which I bought last year, has got a lovely garden.
Qingdao, where I have been three times, is an attractive city to foreigners.
限定性定语从句用法2
（一）限定性定语从句that的用法
that既可代表事物也可代表人，which代表事物；它们在从句中作主语或宾语，that在从句中作宾语时常可省略代词，which在从句中作宾语可以省略。[eg：this is the book which you want。]而且，如果which在从句中作“不及物动词+介词”的介词的宾语，注意介词不要丢掉，而且介词总是放在关系代词which的前边，但有的则放在它原来的位置。
（二）非限定性定语从句的用法
1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分
2. 在引导限定性定语从句时，that有时相当于in which,at which,for which或on which
Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed.
人们对白日做梦的态度正在改变，这与人们对夜间做梦的看法的变化有非常相似之处。
I like the music for the very reason that(for which) he dislikes it.
我出于某种原因喜欢这种音乐，而他恰恰与我相反。
We arrived the day that(on which) they left.
刚好我们到的'那天他们走了。
3. 有时as也可用作关系代词
4. 在非限定性定语从句中，不能用that，而用who,whom代表人，用which代表事物.
“限定和非限定”性定语从句的区别
1、限定性定语从句：
不能省略，如果省略整个句子意思不完整
非限定性定语从句：
可以省略，如果省略整个句子意思仍然完整
2、限定性定语从句： 可以用that 引导
非限定性定语从句： 不可以用that 引导
3、限定性定语从句： 关联词有时可以省略
非限定性定语从句：关联词不可以省略
4、限定性定语从句：不用逗号把它和句子的其他部分隔开
非限定性定语从句：用逗号把它和句子的其他部分隔开
5、限定性定语从句： 只能修饰先行词
非限定性定语从句：可以修饰先行词，也可以修饰整个句子或句子的一部分
这两种定语从句在其功能和形式方面都有明显的区别：
限定性定语从句与主句的关系很紧奏，对其先行词起限定、修饰的作用。如果将其去掉，会影响句子意思的完整性；有时甚至于引起费解、误解。例如：
Rainforests are being cleared for valuable timber and other resources to speed up the economic growth of the nationsin which they are located .
为了加速他们各自所在国家的经济发展，热带雨林作为有价值的原木和其他资源正为人们所砍伐。
Ocean currents affect the climates of the lands near which they flow.
洋流影响其流经的附近地区的气候。
They explained the reason to us why they had hated us before.
他们向我们解释为什么他们不喜欢我们的原因。
非限定性定语从句非限定性定语从句在形式上就与主句很松散，它与主句之间有一个逗点"，"隔开；它对其先行词没有限定、修饰的作用，只起补充、说明的作用。有时也用它来对全句进行补充、说明。即使将其去掉，也不会影响句子意思。由于上述原因，非限定性定语从句在表达意思方面也有别于限定性定语从句。另外，非限定性定语从句在中文译文里，我们往往将其作为一个分句处理，而不把它作定语翻译。例如：Earlier,the Babylonians had attempted to map the world,but they presented it in the form of a flattened disc rather than a sphere,which was the form adopted by Ptolemy .
（此句中，非限定性定语从句是对先行词a sphere进行补充、说明。）
更早之前，巴比伦人曾试图绘制世界地图，但是他们把它绘制成平盘状而不是托勒密所采用的球体状。
The combination of satellites,which transmit information,computers,which store information,and television,which displays information,will change every home into an education and entertainment center .
（此句中，三个非限定性定语从句分别对三个先行词：satellites ，computers和television进行补充、说明。如果去掉这三个非限定性定语从句，那么句子可简化为：
The combination of satellites,computers and television will change every home into an education and entertainment center .）卫星能传输信息，计算机能储存信息，电视能显示信息，把这些手段结合起来可以使每个家庭都成为教育娱乐的中心。
The sun heats the earth,which makes it possible for plants to grow .（此句中，非限定性定语从句是对全句进行补充、说明，将全句表达的意思看成"一件事情）。太阳给予大地热，这就使植物的生长成为可能。
The old man has a son,who is in the army .（此句中，非限定性定语从句是对先行词son进行补充、说明。但本句所传达的信息是："这位老人只有一个儿子"。如果将此句改写成限定性定语从句：
The old man has a son who is in the army . 那位老人有一个在部队工作的儿子。那么，限定性定语从句就要对先行词son进行限定、修饰。这样一来，句子所传达的信息就变成了："这位老人有一个儿子在部队工作，还有其他的儿子在干别的工作"。）那位老人有一个儿子，他在部队工作。